Link the post-16 topics of group 2 elements, acids and bases and polymerisation to the topic of hardness of water. Learn about a range of real life contexts for these chemical ideas through written material, and questions to encourage learning and test understanding. Use this material for enrichment towards the end of a post-16 course, or to add interest and context to your teaching.

The Chemistry in your cupboard resource series describes the chemistry that underlies nine well-known, household products. Each section explores the chemistry of these products and covers a wide range of chemical principles and topics. 

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Chemistry in your cupboard